Beetle Jargon 

Don't Know your elytra from your epipleuron? That's cool here's a list of the most commonly encountered beetle Jargon. 

Something missing that you think should be here? Let me know!

The Anatomy page may also be of use 

 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

 

A

Adeagus: The hardened part of the male genitailia

Antennomere: A segment of the antennae, these are counted from the base of the head to the tip.

B

Bilobed: Divided into two distinct lobes 

Bothrium: A long hair usually set in a depression or puncture

C

Clypeus: Plate covering the Jaws (think of it as the area between your nose and upper lip)

Clavate: Clubbed 

Cordate: Heart shaped 

Coxa: The first part of the leg closest to the abdomen, these may look like flattened plates in some species

D

Declivity: A sudden downward slope or inward depression 

Decumbent: lying down parallel to the body (hairs and pubescence) 

Deflexed: Bent or curving backwards or downwards

Disc: the centre of any flat surface (usually refers to pronotum or elytra)

E

Elytra: The hardened wing cases of a beetle covering the second pair of wings and abdomen 

Elytron: A single part of the Elytra

Emarginate: indentation cutting in  or scoops along an edge 

Epipleuron: A narrow, usually deflexed lip of an elytron edge

Exoskeleton: The external shell of an insect 

F

Femur: The Third leg segment usually the thickest 

Ferruginous: Reddish brown the colour of rust 

Filiform: uniformly cylindrical pieces making a thread (refers to antennal shape)

Flabellate: Feather like 

Flagellum: third section of antennae

Fossorial: Adapted for digging 

Frons: Forehead (between the eyes0

Fuliginous: Dark, almost black 

Funiculus: Small antennal segments between a weevils scape and club

Fuscous: Dull brown

 

Geniculate: elbowed antennae 

Glabrous: hairless, smooth

H

Humerus: the shoulder of the elytra

I

Interstices: the gaps between elytral striae

L

Labium: lower lip of mouthparts

Labrum: upper lip of mothparts

Lamellate: layered plates (think lamination)

Larviform: looks like a larvae

M

Mandibles: Jaws

Maxilla: movable mothpart under the mandibles for manipulation of food

Meso: middle

Meta: Hind

Microsculpture: minute surface texture cracks or engravings 

Moniliform: like a thread of beads

O

Ocellus: simple eyes on the top of the head 

Ovipositor: egg laying tube or apparatus 

P

Palp: Short segmented organ for manipulating and sensing food and stimuli

Pectinate: having narrow projections or divisions set closely in a row

Pedicel: second segment of antennae

Peduncle: Narrow waist between pronotum and elytra 

Piceus: Reddish black 

Pilose: covered in hairs 

Plumose: Feathery 

Pro: front or fore 

Pronotum: upper shield plate covering most of the thorax

Pubescent: covered in fine hairs 

Punctation: Pits, pinholes  and indentations. may be referred to as punctures 

Pygidium: last upper abdominal section, sometime visible protruding from the rear of the elytra 

R

Reticulation: A pattern or arrangement of interlacing lines often resembling a net

Rostrum: Nose or snout 

Rufus: Pale red 

S

Saproxylic: Living on dead and or rotten wood

Scape: First often longer, section of the antennae 

Sclerotised: hardened 

Scrobe: Groove running along the side of the head to house antennal parts 

Scutellum: Small often triangular plate under the pronotum at the base of elytra 

Serrate: Saw like edge 

Setae: Distinct, often erect hairs

Sinuate: Having a waved margin, almost 'S' shaped 

 

Spermatheca: Hardened sperm storage organ of the female reproductive tract

Spiracle: Breathing hole 

Sternite: lower plates of the abdomen 

Stria: long, often parallel groves along the elytra 

Suture: A line where two plates meet (may be used to describe the join he the two elytral pieces meet)

T

Tarsomere: one segment of the Tarsus ( think toes)

Tarsus: last segment of the leg, made of several smaller units (tarsomeres)

Tergite: upper abdominal plate 

Testaceous: a lighter Reddish, orange brown 

Tibia: Fourth leg segment  often long and thin 

Trochanter: Small second leg segment 

Truncate: Cut off or shortened, sometimes meaning wider than long